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Table 2 Choking scenario: Percentage of person's completing each step based on days since training

From: First aid skill retention of first responders within the workplace

  Days Since Training
  1-30 31-90 91-182 183-365 366-547 548-730 731-1095 1096+
Scene Safety         
   Ensure No Danger 5 0 15 6 2 4 0 4
   Gloves 52 41 46 44 42 40 27 38
   Pocket Mask 57 68 71 73 65 56 53 50
Airway         
   Ask "Are you choking" 38 21 34 29 21 32 20 29
   Determine if patient can speak or cough 71 79 78 63 58 72 7 38
Clear the Airway         
   Abdominal thrust - correct placement 14 38 80 31 26 16 20 8
   Repeat thrusts (airway cleared/unconscious) 19 21 76 21 21 20 7 0
EMS         
   Activate EMS 33 62 71 50 49 40 33 52
Airway         
   Open the airway (appropriate technique) 62 53 59 58 72 36 33 29
   Look in mouth for foreign body 57 53 59 60 56 40 53 29
Breathing         
   Seal pocket mask properly 62 50 71 67 65 28 47 25
   Attempt to ventilate 71 53 71 77 70 52 53 58
   Reposition the head 67 15 34 38 40 20 7 17
   Re-attempt to ventilate 48 47 56 48 53 40 33 29